2273 results about "Projection system" patented technology

The invention provides a circuit board welding fault identification method and system based on machine vision, and relates to the technical field of visual identification, and the method comprises the steps: obtaining an image of a circuit board welding region through employing a structured light projection system and a multi-camera imaging system; realizing accurate positioning of a defect region in the region of interest by utilizing three-dimensional shape information and through morphological operation and an edge detection algorithm; for the accurately positioned defect area, obtaining high-precision three-dimensional point cloud data of the defect area, extracting a multi-scale curvature feature descriptor, and fusing the multi-scale curvature feature descriptor with visual features to form a multi-feature descriptor; inputting the multi-feature descriptors into a defect classification and recognition module based on ensemble learning to obtain the types and severity of the welding defects; and according to a defect identification result, the three-dimensional space distribution and severity of the welding defects are visually displayed.

The invention relates to the technical field of electronic equipment, and discloses a screen projection method and device and electronic equipment, which are used for realizing multi-screen simultaneous watching during different-source screen projection. The method is applied to a screen projection system and comprises the steps that first electronic equipment responds to screen projection operation of a user for an application, creates a first virtual screen and generates a user interface of the application on the first virtual screen; the first electronic equipment can copy the user interface generated on the first virtual screen to the display screen of the first electronic equipment for display while projecting the user interface of the application generated on the first virtual screen to the second electronic equipment, so that multi-screen simultaneous watching of the first electronic equipment and the second electronic equipment is realized.

The embodiment of the invention provides a projection system and optical display equipment. Wherein the projection system comprises a lens group, a prism and a display chip which are arranged in sequence; wherein the lens group is composed of a first lens, a second lens, a third lens and a fourth lens which are sequentially arranged, and the refractive index of the first lens, the refractive index of the second lens, the refractive index of the third lens and the refractive index of the fourth lens are larger than 1.6; the refractive index of the prism is less than 1.55; the projection system satisfies: 1 < = TTL / f < = 1.5; wherein TTL is the total optical length of the projection system, and f is the effective focal length of the projection system.

The invention discloses a holographic projection system based on an AI large model. According to the invention, through the nano-scale optical coating and environment self-adaptive adjustment technology, harmful blue light is effectively filtered, environment light parameters are dynamically matched, the problem that eyes are injured by a common screen is solved, and the method is especially suitable for long-time learning scenes of children. The holographic projection core module adopts a naked eye 3D light field technology, presents complex models such as dinosaur, marine organisms and the like in a three-dimensional suspension manner through high-fidelity color restoration and dynamic depth-of-field adjustment capability, and is matched with gesture touch control and voice instructions of multi-mode interaction hardware, so that a user can directly touch a virtual object, and the real-time performance of the virtual object is improved. Experience upgrading from plane observation to space interaction is achieved, and knowledge such as English learning and animal and plant cognition is converted into interactive games and story narration through virtual teacher images and scene scripts. The autistic children can complete social dialogue training under the guidance of the virtual role, the system analyzes emotion fluctuation in real time and adjusts a guidance strategy, and social fear is gradually eliminated.

Provided is a light source device, including a first laser light source group, a second laser light source group, a dichroic mirror, a fluorescence converter, and an emission component. The first laser light source group emits laser light of a first waveband, and the second laser light source group emits laser light of a second waveband and laser light of a third waveband. The dichroic mirror is disposed on light-output sides of the first laser light source group and the second laser light source group, and the fluorescence converter and the emission component are respectively disposed on light-output sides of the dichroic mirror. The dichroic mirror is configured to emit laser light of various wavebands, and the fluorescence converter generates target fluorescence under the excitation of the laser light of the first waveband, and the target fluorescence is reflected by the dichroic mirror to the emission component.

The invention discloses a large workpiece strain measuring point auxiliary positioning system and method, and the system comprises a professional software and automatic control system, and an industrial photogrammetry system, a car lifting system, a laser projection system and a three-dimensional scanning quantitative analysis system which are connected with the professional software and automatic control system. And a positioning target is arranged on the surface of the large workpiece product. According to the system, strain contact auxiliary lineation and laser guide assembly work of a large workpiece and quantitative analysis work of strain gauge pasting are achieved, the system takes a target arranged on a product as a positioning reference, the outline of a product model is extracted in a photogrammetry mode, the product model and a real object are matched and unified to the same coordinate system, and the product model and the real object are obtained. The position contour of the strain gauge needing to be pasted and auxiliary information are projected to the surface of a product through the laser projection technology, the current pasting position information can be efficiently and accurately reflected, and high-efficiency and high-precision assembly of the strain gauge is facilitated.

The embodiment disclose a wearable augmented reality eyewear system including a frame supporting left and right transparent lenses. A plurality of outward-facing cameras mounted on the frame have overlapping fields of view for capturing real-time images of the environment. A plurality of inward-facing cameras integrated in the frame or lenses detect pupil size, pupil dilation, and gaze direction using infrared imaging. A digital processor analyzes gaze direction and fixation based on virtual grid coordinates, initiates an object or person recognition routine using images from the outward-facing cameras, and compares detected features with records in a database. At least one lens includes an AR projection system embedded therein and configured to superimpose data about the recognized object or person in the user's field of view. An audio speaker positioned near the user's ear outputs related audio. A wireless communication module enables real-time data exchange with a cloud-based platform.

A kaleidoscopic laser beam projector (KLBP) system that employs a single moving structure to project patterns of sweeping laser beams with diverse sweep directions and emission apertures. The system comprises a collimated light source, a spinning mirror deflector (“spindle / flutter mirror”) at the center, and a stationary kaleidoscopic mirror containing multiple facet mirrors arranged in a concave fashion around the spindle mirror. As the spindle mirror rotates, it directs laser beams in a radially whirling movement toward the facet mirrors, which then subdivide these beams into multiple short strokes and redirect them outward in different directions. Various embodiments include configurations with diffractive optical elements (DOEs) for beam splitting, different kaleidoscopic mirror geometries (hexagonal, octagonal, etc.), and innovative flutter mirror mechanisms that create controlled angular variations during rotation. The system enables a “4×1” configuration that replaces traditional “4×4” systems requiring eight motors and multiple moving structures. The KLBP system offers significant advantages including mechanical simplicity, reduced size and weight, improved energy efficiency, enhanced reliability, cost-effectiveness, and modular configurability. The diverse beam incidence angles enable superior illumination of complex three-dimensional objects for applications in machine vision systems, precision metrology, gap and flushness inspection, and robot-assisted assembly of complex structures.

The invention relates to the field of multi-device screen projection, in particular to a multi-device rapid pairing and seamless screen projection switching system based on ultrasonic signals, which comprises an ultrasonic processing module, a switching module, a data transmission module and an intelligent control processing module which are in wireless communication connection, wherein the ultrasonic processing module is used for transmitting and receiving ultrasonic signals through a phase modulation technology and a self-adaptive filtering technology, and pairing the ultrasonic signals; the switching module is used for switching screen projection connection after successful pairing; the data transmission module is used for establishing a temporary data transmission channel for data transmission; and the intelligent control processing module is used for receiving a screen projection request through a screen projection system optimization algorithm, a time window and a priority algorithm, and dynamically adjusting screen projection resource allocation. According to the invention, efficient pairing and switching of multiple devices can be realized, reliable information transmission and error correction are guaranteed, screen projection resource management and switching are more flexible, and good user experience and adaptability are improved.

The invention, which relates to the technical field of structured light measurement, discloses a dual-frequency grating fringe projection system comprising a light source modulation group, a grating modulation group, a beam splitter prism and a projection lens. The light source modulation group comprises a first LED light source, a second LED light source, a first collimating lens group and a second collimating lens group; the grating modulation group comprises a first grating sheet, a second grating sheet, a first piezoelectric ceramic and a second piezoelectric ceramic; the first piezoelectric ceramic in the grating modulation group is connected with the first grating sheet, and the second piezoelectric ceramic is connected with the second grating sheet, so that the positions of the grating sheets are moved, and the stripe patterns at the bottoms of the grating sheets are translated. The system adopts the two piezoelectric ceramics to drive the grating sheets and the beam splitter prisms with different widths for beam combination, the structure is simple, and a low-cost double-frequency four-step phase shift pattern can be realized. The fine grating stripes can improve the measurement precision of three-dimensional reconstruction, and the wide grating stripes can improve the measurement depth of field of three-dimensional reconstruction, thereby improving the application scene of the structured light 3D system.

The invention relates to the technical field of near-to-eye display, in particular to a miniature biprism projection system for a reflection illumination light source and near-to-eye display equipment. The miniature biprism projection system comprises an illumination light source, an image source, a first prism and a second prism, wherein the second prism is arranged between the first prism and the image source; the second prism is used for receiving the illumination light rays output by the illumination light source, reflecting the illumination light rays twice and then emitting the illumination light rays to the image source; the image source reflects the illumination light to form image light, and the image light is refracted by the second prism, then enters the first prism, is reflected twice in the first prism, and then is emitted to the exit pupil position. According to the projection system, the illumination light path and the imaging light path share the second prism, the illumination light is reflected twice by the second prism to the image source, the image light is refracted by the second prism, reflected twice by the first prism and then emitted to the exit pupil position, light path folding is achieved, and the size of the projection system is greatly reduced.

A method of generating a pixel stream from an image comprised of pixels which each have a pixel value. The method comprising storing the image in a memory; determining, for each of successive sub-intervals, that pixel that is to be displayed by a light beam within said sub-interval; for each of successive sequences of one or more successive sub-intervals for which the same pixel has been determined: retrieving the pixel value of said pixel from the memory once and appending the retrieved pixel value N times to the pixel stream. Further disclosed is a projection system using this method.

The disclosure relates to augmented reality devices based on a curved waveguide. An augmented reality device is provided. The augmented reality device includes a projection system to project an undistorted image, an input optical compensator located on the path of light rays out-coupled from the projection system, a curved waveguide comprising an input diffractive optical element and an output diffractive optical element. The output diffractive optical element performs the function of an output optical compensator that converts the light beams of a distorted image at the output of the waveguide into parallel light beams to output an undistorted image. Augmented reality glasses comprising an augmented reality device are also proposed. There is provided the ability to project a virtual image without aberrations, distortions and doubling of the image.

The invention discloses a single-frame real-time three-dimensional imaging method based on deep learning. The method comprises the following steps: constructing a lightweight phase recovery network model based on a physical model; building a multi-vision structure light stripe projection system; and constructing a training data set, completing training of the lightweight phase recovery network model, and deploying the lightweight phase recovery network model by using TensorRT. Three wrapped phase images are obtained in real time through parallel reasoning of three monochromatic view angles; unwrapping the wrapped phase into an absolute phase by using a multi-view geometric constraint and three-dimensional phase matching algorithm; and generating a three-dimensional point cloud with color texture information through phase-height mapping and a color image. According to the method, the deep learning technology and a traditional fringe projection physical model are combined, rapid phase acquisition can be completed only through a single frame of image, motion interference is overcome, and online real-time high-precision three-dimensional imaging of a complex dynamic scene is achieved.

The invention relates to the technical field of near-eye display, and provides an optical waveguide, a display device and near-eye display equipment. The coupling-in region, the coupling-out region and the metasurface structure are arranged on the waveguide substrate; the metasurface structure is arranged between the image source screen and the coupling-in area; wherein the metasurface structure is used for carrying out collimation processing on incident light provided by an image source screen to obtain collimated incident light; the coupling area is used for coupling the collimated incident light into the waveguide substrate; the coupling-out region is used for coupling the incident light propagating in the waveguide substrate out to human eyes. Under the condition that the optical waveguide has the light ray processing capability corresponding to the optical waveguide system, the projection system and the optical waveguide system can be integrally arranged on the optical waveguide because the metasurface structure arranged on the optical waveguide has the light ray processing capability corresponding to the projection system; the miniaturization of a projection system and an optical waveguide system which are integrally arranged is promoted, so that the miniaturization of near-to-eye display equipment is promoted.

A holographic projection system is provided. The holographic projection system includes a first hologram and a second hologram. The holographic projection system is arranged to spatially modulate light in accordance with the first hologram to form a first holographic wavefront and to spatially modulate light in accordance with the second hologram to form a second holographic wavefront. The holographic projection system further includes a waveguide including an input port that includes a first input area arranged to receive the first holographic wavefront and a second input area arranged to receive the second holographic wavefront. The waveguide further includes a pair of surfaces arranged to waveguide the first and second holographic wavefront therebetween. The waveguide is arranged such the first holographic wavefront is combined with the second holographic wavefront after one or more internal reflections of the first holographic wavefront between the pair of surfaces.

The invention relates to the technical field of data processing, and particularly discloses a desktop multi-point touch interactive projection system, which comprises a projector, an optical touch module, a sensor module, a controller, a memory and a cloud server, the projector is used for projecting an image onto a projection surface; the optical touch module is used for completing gesture recognition of a user on a projection surface and capturing touch operation of the user; the sensor module is used for collecting environment information in real time; the controller is used for coordinating the work of each module; the memory is used for locally storing projection content and user preference data; and the cloud server realizes remote synchronization of data. According to the invention, high-precision gesture touch interaction is realized, 'identification and response 'of operation is realized, and the sensitivity and anti-interference performance of touch are effectively improved.

The present disclosure relates to a motor vehicle, including a projection system having at least one first and at least one second projection device. The at least one first projection device has at least one first light source and the at least second projection device has at least one second light source, where at least one first light projection can be projected into surroundings of the motor vehicle by the at least first projection device. The at least first light projection defines an actual position of the stationary motor vehicle, and at least one second light projection can be projected into surroundings of the motor vehicle by the at least second projection device. The at least second light projection defines a target position defining a parking position of the motor vehicle. The at least second projection device can be set by the user to change the target position. A deviation between the actual position and the target position can be determined via a detection device. Depending on the determined deviation, control parameters for performing an autonomous driving maneuver, in the context of which the motor vehicle can be maneuvered autonomously into the parking position, can be determined via a control device.

A micro-projection system based on a hybrid refractive-diffractive lens, relating to the technical field of near-eye display devices. A micro-projection lens set sequentially comprises, along an optical axis and from an exit pupil side (6) to an image source side (7), a first lens (1), a second lens (2), a third lens (3), and a fourth lens (4), wherein the first lens (1) is a plano-convex lens and protrudes toward the exit pupil side (6), the second lens (2) is a biconcave lens, the third lens (3) is a meniscus convex lens and protrudes towards the exit pupil side (6), and the fourth lens (4) is a biconvex lens. The first lens (1) has positive focal power, and is used for deflecting large-angle light rays. The second lens (2), the third lens (3), and the fourth lens (4) are cemented by means of an optical adhesive to form a hybrid refractive-diffractive lens; and the cemented surfaces of the second lens (2), the third lens (3), and the fourth lens (4) are each a superposition of an even asphere and a diffractive surface.

Some embodiments of this disclosure can improve measurement of target mark asymmetry in metrology apparatuses for improving accuracy in measurements performed in conjunction with lithographic processes. For example, a metrology system can include a projection system configured to receive a plurality of diffraction orders diffracted from a target on a substrate. The metrology system can further include a detector array and a waveguide device configured to transmit the plurality of diffraction orders between the projection system and the detector array. The detector array can be configured to detect each of the plurality of diffraction orders spatially separate from other ones of the plurality of diffraction orders.

The invention discloses an intelligent self-closed-loop car lamp light blanket projection image illumination uniformity optimization method, and belongs to the technical field of intelligent car lamps. The method comprises the following steps: S1, defining parameters of a projection system as a particle swarm, and initializing positions and speeds of particles; s2, defining a fitness evaluation function of each particle; s3, updating the speed and the position of each particle according to a particle swarm optimization algorithm formula; s4, calculating fitness values of the particles according to the updated position vectors of the particles; and S5, judging whether an iteration termination condition is met or not, if the iteration termination condition is met, outputting the optimal projection system parameters, and if the iteration termination condition is not met, skipping to the step S3. According to the intelligent self-closed-loop optimization method for the illumination uniformity of the projected image of the vehicle lamp light blanket, the illumination uniformity of the projected image is effectively improved, the quality and adaptability of light blanket projection are remarkably improved, and the visual effect of light blanket projection is improved.

A method of generating a compressed data stream from an uncompressed data stream with red, green and blue sub-streams of red, green and blue colour values of an image, comprising, for each of a number of sub-interval which together form a time interval: Determining, in each sub-stream, at least N−1 sets of successive equal colour values and run-lengths indicating the numbers of colour values in the sets; and generating a data packet composed of one colour value from each set and their respective run-lengths; which data packet forms the compressed data stream for said time interval. Further disclosed is a projection system using this method.

The invention belongs to the technical field of projection light field regulation and control, and particularly relates to a method and a system for enhancing manufacturability of a projection type structure photomask pattern. Determining an initial mask pattern according to the target structured light field and the magnification of the projection system; calculating an initially generated structured light field by adopting a vector diffraction imaging model, calculating a numerical value of a target function, and judging whether the numerical value meets a preset threshold value or not; if the target function does not meet the preset threshold value, carrying out iterative optimization on the mask pattern by adopting an optimal gradient method until the preset threshold value of the target function is met, and outputting a continuous numerical value mask; pixel splitting or fusion is carried out on the continuous numerical mask according to the required mask manufacturing precision; local integral approximation operation is adopted, binarization processing is carried out on the mask, and the manufacturability of the mask is enhanced. According to the method, the projection type structure light field which is high in degree of freedom, high in efficiency, low in calculation power requirement and robust can be optimized, the mask pattern which can be manufactured can be obtained, and the manufacturing precision of the mask can be adjusted at will so as to adapt to different mask pattern preparation processes.

A vehicle includes an automated apparatus extending from the vehicle and a projection system. The projection system includes a projector positioned on the vehicle. The projector is configured to operate to provide a projection onto a ground surface, the projection covering a zone. The automated apparatus is configured to operate within the zone.

A motor vehicle lighting device including a housing with a first module for emitting a first beam, a second module for emitting a second beam, extending above the first, a third module for emitting a third segmented beam, extending above the second beam, and an optical projection system. The second module is arranged below the first module, the third module is arranged below the second module, and each of the modules includes a plurality of light sources, a collector for collecting and reflecting the rays emitted by the plurality of light sources into a beam, and a portion of the optical projection system that is arranged to project the beam, the portion forming an image of the collector.

A vehicular projection system is disclosed. The projection system may include a projector that is operatively connected to a vehicle, where the operation of the projector is facilitated by utilizing sensors operatively connected to the vehicle. In embodiments, the vehicle is powered by one or more rechargeable batteries and is equipped with numerous sensors. The sensors continually retrieve data from the area surrounding the vehicle and share collected data with a computer system associated with the vehicle. The computer system processes the data creating directions for the automotive controls of the vehicle which transport the vehicle to an appropriate location.

A structured light microscopic system relates to the technical field of optical detection equipment and comprises a light source system, a double telecentric projection system, a relay system and an image detection assembly. The light source system is configured to provide structured light for the double telecentric projection system; the double telecentric projection system is configured to receive the structured light output by the light source system and project the structured light to the relay system according to a preset zoom ratio; the relay system is configured to receive the structured light output by the double telecentric projection system, perform relay transmission and output parallel structured light used for irradiating a preset field angle of the sample to be detected; and the image detection assembly is configured to receive a detection light beam formed by the structured light reflected by the sample to be detected and output corresponding imaging information. According to the invention, higher light energy transmission efficiency can be realized, and higher detection resolution can be provided.

The embodiments of the present application provide a screen projection reverse control method, a screen projection system, and a screen projection device, and relate to the field of screen projection technology. The method is applied to a target screen projection device directly connected to a terminal device in at least one screen projection device included in the screen projection system, the screen projection system also includes a projection screen, and at least one screen projection device is communicatively connected to the projection screen. The method includes: receiving reverse control information sent by the projection screen; encapsulating the reverse control information into an operation message supported by the kernel according to the target type of the control operation; passing the operation message to an event node corresponding to the type of the control operation, and converting the operation message into a control signal about the terminal device through the event node; sending the control signal to the terminal device, so that the terminal device receives the control signal and performs a reverse control operation of the target type based on the position information. In this way, through at least one screen projection device, multi-level transmission of the reverse control signal is realized, and reverse control of the terminal device by the projection device is realized.

The invention relates to the technical field of panoramic projection systems, in particular to an intelligent XR multi-mode interactive exhibition stadium panoramic projection system, which comprises an intelligent data terminal, a display interaction module in communication connection with the intelligent data terminal, a VR terminal comprising a user client, an action capture card and virtual reality glasses, an intelligent service background connected with the VR terminal through a network, and a display interaction module in communication connection with the intelligent data terminal. Comprising an action data processing module used for acquiring action and position data from an action capture card and decoding and processing the data; the virtual reality module is used for updating a virtual scene according to the action data; the data communication and control module is used for performing data communication with the VR terminal and controlling the display screen; the panoramic projection display system comprises a plurality of projectors and is used for forming a curved screen or a spherical screen in an exhibition hall; determining the content projected to the display screen according to the real-time action position of the user; the user experience is greatly improved, and the exhibition information transmission efficiency can be effectively improved.